1.25x^2-x+2.125=0

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Solution for 1.25x^2-x+2.125=0 equation:


Simplifying
1.25x2 + -1x + 2.125 = 0

Reorder the terms:
2.125 + -1x + 1.25x2 = 0

Solving
2.125 + -1x + 1.25x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
1.25 the coefficient of the squared term: 

Divide each side by '1.25'.
1.7 + -0.8x + x2 = 0

Move the constant term to the right:

Add '-1.7' to each side of the equation.
1.7 + -0.8x + -1.7 + x2 = 0 + -1.7

Reorder the terms:
1.7 + -1.7 + -0.8x + x2 = 0 + -1.7

Combine like terms: 1.7 + -1.7 = 0.0
0.0 + -0.8x + x2 = 0 + -1.7
-0.8x + x2 = 0 + -1.7

Combine like terms: 0 + -1.7 = -1.7
-0.8x + x2 = -1.7

The x term is -0.8x.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8x + 0.16 + x2 = -1.7 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = -1.7 + 0.16

Combine like terms: -1.7 + 0.16 = -1.54
0.16 + -0.8x + x2 = -1.54

Factor a perfect square on the left side:
(x + -0.4)(x + -0.4) = -1.54

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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